Pre-Training Formula for Bigger, Better Workouts*
Helps Promote Energy, Strength, and Testosterone and Reduce Feelings of Fatigue*
9.1 out of 10  (554 Reviews)
4 Sizes
7 Servings
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1 Flavor
Black Cherry
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Price: $10.99 ($1.57 / Serving)
Flavor Rating: 8.9

Product Overview

Testosterone Supporting Pre-Workout
GAT Nitraflex. Hyperemia and Testosterone Enhancing Powder*


TeamGAT Athlete 2015 Arnold Champion

Citrulline Malate

The Most Seething Intensity

The Most Seething Intensity. GAT Sport Nitraflex bottle image
New Instant Exhilarating RTDs
12 Pack Case - 10 oz. Single Serving Bottles
The NITRAFLEX Advantages:
  • highly Concentrated
  • More than 3X Strength
  • Clinically Studied CFB+ Vascoactive Compounds
  • Amazingly Delicious Flavors
  • 1 Scoop Potency

NITRAFLEX is a clinically tested, high-intensity pre-training formula with potent ingredients to help magnify energy, alertness, strength, stamina, pumps and enhance Testosterone during workouts.*

GAT Sport Nitraflex. Same level potency on key ingredients!

Ratings & Reviews

Overall Rating
554 Ratings
Verified Buyer Rating
293 Ratings
Average Flavor Rating
11 Flavors
Top Rated Flavor
Pina Colada
By clicking the button above, you agree to entering the Reviews section. Products in the Store are not intended to diagnose, treat, cure, or prevent any disease.
Verified Buyer
  • 10 Variety Pack

Great pre-workout. The pump, focus, and energy is clean. No crash.

Verified Buyer
  • 8 Watermelon
  • 8 Blue Raspberry
  • 10 Black Cherry
  • 8 Pina Colada
  • 8 Pineapple
  • 8 Orange

Alright my friends, I write this review having tried most flavors and survived the wrath each one brings. I am a veteran lifter, I practice fantastic nutrition, form of a Greek God, the whole nine yards. First off and most importantly, take **** good note of this. You will notice on the container in BIG red letters "DO NOT TAKE MORE THAN ONE SCOOP IN 24 HOURS". This is not a joke, this is not a test of your integrity, this is not a dare to take more than one scoop. Do not, I repeat, DO NOT take more than one full scoop of this. Do not even take 1.1 scoops of this sweet gain powder. In addition, do not even mix this or drink this closely to other caffeine products- such as coffee. Did I make myself clear? Good. If you have read this far, you are probably wondering why you should not take more than one scoop because the big red letters just were not enough for you. Well I am glad you are still here to find out. You will pass out on your second warm up set of squats, your quads will cramp like a sponge in the desert, and you will not make any gains that day. Besides this one terrible incident, I have continued to use Nitraflex as my go-to PWO supplement. It seems to be the only product that holds true to itself. My focus lasts the entire workout (currently in the second week of Arnolds Mass program). Cannot express enough how sick this stuff is- going to purchase more immediately after this post. 10 out of 10 have and will continue to recommend to friends. ** Oh, almost forgot... Some of you may be concerned about the testosterone enhancing side effects. As I previously stated, "It seems to be the only product that holds true to itself". I believe I do not need to go into detail.


GAT Nitraflex has saved my pre-workout hunt, for the longest time I was lost in what pre-workout to take, I've tried numerous of brands and after several stomach ache and questioning nutrition label facts I had to find a safer alternative. That's when I found GAT Nitrafle. This product is CLINICALLY TESTED ! No more stomach aches no more questioning what i am putting into my body. I feel stronger, and healthier. I tend to add another brand of creatine to GAT Nitraflex. Flavor: Blue Raspberry 10/10

  • 9 Pina Colada

Great Pre! the flavor is good, just for some reason it felt chemically and chalky sometimes, not sure why.

Verified Buyer

When I first started taking this pre-workout, I almost immediately felt the difference. If you are not used to taking a pre-workout, Nitraflex will be potent enough to bring you over the edge. You will gain enough focus to get that last rep out, no matter how hard it may seem. My preferred flavors are Pina Colada or Black Cherry. I suggest purchasing the sample pack to try all of them out before making a final decision. I also recommend not to become dependent on this pre-workout for every day use if you want to maintain its full effect, as it is likely to lose potency once you begin to gain tolerance.

† This price is the retail price for this product found at one or more retail websites in the last 30 days. The price may not include shipping cost, tax, sale or promotional prices, or discounts such as member pricing. Prices may change. verifies this price every 30 days.
7 Servings
7 Servings
$1.57 Per Serving
Black Cherry
8 Packets
8 Packets
8 Servings | $1.53 Per Serving
Variety Pack
12 - 10 Fl. Oz. Bottles
12 - 10 Fl. Oz. Bottles
12 Servings | $2.21 Per Serving


7 Servings Black Cherry
Serving Size: 1 Scoop (10 grams)
Servings Per Container: 7
Amount Per Serving %DV
Niacin (as nicotinic acid) 25 mg 125%
Vascoactive Arginase-Regulating NO Precursor Complex       
Citrulline, Citrulline Malate, L-Arginine Malate, L-Arginine, Alpha-ketoglutarate, Resveratrol, Pterostilbene
Acute Energy, Focus, Intensity, Neuromodulating, Endurance Complex       
Beta-Alanine (as CarnoSyn®), Caffeine, DMAE Bitartrate, N-Acetyl-L-Tyrosine, Theanine, Rauwolscine (Rauvolfia Canenscens L. (Root Extract))
Clinically-Studied Testosterone-Enhancing Complex       
Calcium fructopyranose borate (CFB) US Patent #5,962,049
** Daily Value not established
Other Ingredients:
Pineapple Fruit Powder, Citric Acid, Silicon Dioxide, Acesulfame Potassium, Natural and Artificial Flavors, Sucralose, FD&C Red #40, FD&C Blue #1

Directions For NITRAFLEX:


Training days: Day 1: Begin by assessing your tolerance with half a serving of NITRAFLEX™ mixed with 6oz of cold water. Days 2 and beyond: Depending on tolerance, mix 1 serving (1 scoop) of NITRAFLEX™ with 10oz of cold water and consume within 30 minutes before working out.

Non-training days: Take 1 serving (1 scoop) upon arising in the morning or before any physical activity. Do not take more than 1 serving in a single 24-hour period. Do not take within five hours of bedtime.


Consume one 10 fl oz bottle of NITRAFLEX® within 20-30 minutes prior to working out. DO NOT CONSUME with any other products containing CAFFEINE with this product.

Warnings: This product is strictly intended for use by healthy persons 18 years of age or older. Each serving (1 scoop) contains 325 mg of caffeine. Do not combine with other caffeine- or stimulant-containing products. Follow the instructions for assessing your tolerance. Do not use if you are pregnant, nursing or trying to become pregnant. Do not use if you are currently unaware of your health status or if you have a medical condition including but not limited to heart, liver, kidney, or thyroid disease, psychiatric or epileptic disorders, high or low blood pressure, cardiac arrhythmia, recurrent headaches, enlarged prostate or glaucoma. Do not use if you are taking prescription or non-prescription medication of any kind including but not limited to MAO inhibitors, anti-depressants, aspirin or non-steroidal anti-inflammatory drugs. Do not use if you are prone to overheating or dehydration. After 8 weeks of use, take 1 week off before resuming use. Discontinue at least 2 weeks rior to surgery or if you experience rapid heartbeat, dizziness, severe headache or shortness of breath. Do not take within five hours of bedtime.

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Learn more about L-Arginine.